package sanyuesan;

import object.Point;

import java.util.*;

public class SortPoint {
    public static void main(String[] args) {
        List<Point>list=new ArrayList<>();
        list.add(new Point(1,2));
        list.add(new Point(2,3));
        list.add(new Point(3,4));
        list.add(new Point(4,5));
        list.add(new Point(5,6));
        System.out.println("list原始数据:"+list);

        list.sort(new Comparator<Point>() {
            @Override
            public int compare(Point o1, Point o2) {
                return 0;
            }
        });
        System.out.println("list排序后数据:"+list);

        Collections.sort(list, new Comparator<Point>() {
            @Override
            public int compare(Point o1, Point o2) {
                int len1=o1.getX()*o1.getX()+o1.getY()*o1.getY();
                int len2=o2.getY()*o2.getY()+o2.getY()*o2.getY();
                return len2-len1;
            }
        });
    }
}
